Have not tried the straight flute yet. I did this test with 1/16" up spiral running at 50 ipm. As for that, it did very well. I had a few fails in other areas which are due to securing the material. Having a down spiral would have helped also. But, so far, I am happy with the progress.
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Nice, I think it’s a learning process. It’s one of those materials you need to tinker with. All record ( albums) are not the same make, what may work for 1 might not work for all.
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Would you recommend it?
I tried 4 or 5 different double sided tapes and this is one that works for me, it’s very thin and leaves almost zero residue if any at all.
Just make sure both parts are clean and dust free
I will give it a shot. On that last carve posting, one with the flowers, I used the tape and super glue method. It was a fail because it held only where I had placed a bead of glue. There are many small details in this design which meant many places that didn’t have a bead of glue under them and, as a result, the record would flex and lift up some. Made for rough edges and some breaks. I figured carpet tape would be a good next try but was concerned about how easily it would release when I wanted it to.
Thanks for the insight.
so I would suggest for work holding that you use a vacuum fixture and put high contact release paper on the back of the record then place in the vacuum fixture and then cut through the record but not through the release paper that should hold the record stable and allow for better cutting
Finally a successful carve…
A 1/16” up spiral running at 50ipm and cutting full depth single pass. I found it VERY important to make sure any place being carved MUST be securely held down. Even the slightest bend upward can cause miscarves or pieces to break. Due to the large area that needs this absolute coverage, the tape and super glue method just does not work - I was unable to get the glue to spread thin and complete enough to work. Carpet tape seems to be the answer.
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very very nice!!!
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Very cool, I guess you found the right combination of bit, speed and hold down
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Yea, I think so. I still have yet to try a straight bit but this seems to work well. I think the most important thing is the hold-down. If the record gets pulled up ANY there is a good chance of something getting messed up. As is the case with this carve, that means a lot of tape to secure the entire item. If I am carving just a quardrant then only that area needs complete coverage while the rest is “tacked” in place.
have you thought about the vacuum jig idea that would save you alot of money in the long run?
Seems like that pressure foot you posted about might work here
yeah I was actually just thinking about that I bet this is the perfect application for that
Yea, I have thought about it but have struggled with believing it would work in a case like the zebra. I don’t know much about them but, from what I have seen, there are 2 to 3 spots where a vacuum is applied to the material. In this case, for all practical purposes, the entire thing would need to have a vacuum applied to it. I can see it working until the carve starts as then, after more of the vacuum holes are exposed, the overall suction capacity decreases. Would there be enough remaining suction to hold sufficiently? I dunno. Maybe. But, yea, I’ve thought about it and it has been on the back burner with maybe getting to it at some point.
Pressure foot? Would this address my concern above?
Google cnc pressure foot, there are several out there. @WorkinWoods posted about them the other day.
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yeah check this out
also oh no you can build a vacuum fixture that will put suction on the entire record except for about a .125" ring around the outer edge a record that size if the fixture is built correctly your entire body weight would not pull it off
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@ChrisRice @WorkinWoods
I did see that posting but didn’t read into it.
So, I just watched a couple of videos and it looks like it could have potential but maybe not with vinyl records. From what I have noticed while watching carves the past few days is that a pointy piece, even 1/2" long, could flex up when the second side of it is being carved.
On the videos I watched it looked like the center hole of the foot is, what, 1.5"? So, at least in my mind, I could see there still being an issue with pointy tips. Maybe?
yeah but you can get different plastic inserts for the bottom of them or custom make one that goes all the way down to the bit and hugs it close to prevent that
personally I think a vac fixture with some high contact release paper or even vacuum mat would be more reliable than the foot
but I am not sure on the pressure foot I have not used one just yet just watched the videos and did some research like you say
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How can I slow down the speed to 100 or 75 ipm on my DeWalt